8989953257 has 2 divisors, whose sum is σ = 8989953258. Its totient is φ = 8989953256.

The previous prime is 8989953253. The next prime is 8989953299. The reversal of 8989953257 is 7523599898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4852376281 + 4137576976 = 69659^2 + 64324^2 .

It is a cyclic number.

It is not a de Polignac number, because 8989953257 - 2² = 8989953253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8989953193 and 8989953202.

It is not a weakly prime, because it can be changed into another prime (8989953253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4494976628 + 4494976629.

It is an arithmetic number, because the mean of its divisors is an integer number (4494976629).

Almost surely, 2^8989953257 is an apocalyptic number.

It is an amenable number.

8989953257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8989953257 is an equidigital number, since it uses as much as digits as its factorization.

8989953257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 65.

The square root of 8989953257 is about 94815.3640345277. The cubic root of 8989953257 is about 2079.3095323623.

The spelling of 8989953257 in words is "eight billion, nine hundred eighty-nine million, nine hundred fifty-three thousand, two hundred fifty-seven".